Abstract: A side rail includes base members, and plate members that are different in both plate thickness and material from the base members. The base members have a cutout or an opening, and the plate members are fitted into this cutout or opening and joined to the base members by laser welding.

Abstract: In the front lower arm, a ball joint bracket to which a ball joint to be coupled to a knuckle is attached is welded to an outer end of a lower arm body in the left and right direction of the vehicle. A spindle member connected to a lower end of a shock absorber is provided on a front side of the ball joint bracket in the front and back direction of the vehicle so as to protrude forward. A welding part between the lower arm body and the ball joint bracket is inclined in plan view, toward an outside in the left and right direction from a front part to a rear part of the welded part in the front and back direction. An extension of a central axial line of the spindle member is arranged so as to intersect with the welded part.

Abstract: The present disclosure provides a vehicle body frame structure including: a side rail extending in a vehicle longitudinal direction and disposed so as to face a front tire in a vehicle transverse direction; a cab mount member projecting toward a vehicle transverse direction outer side, from a region of the side rail that is further toward a vehicle rear side than the front tire, and to which a body is mounted; and a projecting portion projecting toward the front tire from a region of the cab mount member that is away from the side rail in the vehicle transverse direction.

Abstract: A side rail includes base members, and plate members that are different in both plate thickness and material from the base members. The base members have a cutout or an opening, and the plate members are fitted into this cutout or opening and joined to the base members by laser welding.

Abstract: A vehicle rear section structure includes: left and right rear side members disposed along a front-rear direction at width direction sides of a rear floor pan; a rear suspension member extending along the vehicle front-rear direction, and attached to front portions of left and right rear side members; a load bearing section projecting upwardly from the rear suspension member; left and right reinforcement members extending along the vehicle front-rear direction, and disposed at a vehicle width direction inner side of rear portions of the left and right rear side members and at a vehicle rear side of the rear suspension member, a rear end portion of the reinforcement member partially overlapping a rear bumper reinforcement in a vehicle front-rear direction view; and a rear cross member linking the left and right rear side members together and partially overlapping the load bearing section in the vehicle front-rear direction view.

Abstract: The present disclosure provides a vehicle body frame structure including: a side rail extending in a vehicle longitudinal direction and disposed so as to face a front tire in a vehicle transverse direction; a cab mount member projecting toward a vehicle transverse direction outer side, from a region of the side rail that is further toward a vehicle rear side than the front tire, and to which a body is mounted; and a projecting portion projecting toward the front tire from a region of the cab mount member that is away from the side rail in the vehicle transverse direction.

Abstract: A vehicle rear section structure includes: left and right rear side members disposed along a front-rear direction at width direction sides of a rear floor pan; a rear suspension member extending along the vehicle front-rear direction, and attached to front portions of left and right rear side members; a load bearing section projecting upwardly from the rear suspension member; left and right reinforcement members extending along the vehicle front-rear direction, and disposed at a vehicle width direction inner side of rear portions of the left and right rear side members and at a vehicle rear side of the rear suspension member, a rear end portion of the reinforcement member partially overlapping a rear bumper reinforcement in a vehicle front-rear direction view; and a rear cross member linking the left and right rear side members together and partially overlapping the load bearing section in the vehicle front-rear direction view.

Abstract: A vehicle rear section structure includes: left and right rear side members disposed along a front-rear direction at both width direction sides of a rear floor pan; a rear suspension member that includes left and right side sections disposed along the front-rear direction, both front-rear end portions thereof being attached to respective front portions of the rear side members; and left and right reinforcement members extending along the front-rear direction, and being disposed at a width direction inner side of rear portions of the side members and at a rear side of the rear suspension member, each including a straight ridgeline section extending along the front-rear direction from a front end portion across to a rear end portion of the reinforcement member, at least part of the respective front end portion of the reinforcement member overlapping the respective side section of the rear suspension member in a front-rear direction view.

Abstract: A vehicle rear section structure includes: left and right rear side members disposed along a front-rear direction at both width direction sides of a rear floor pan; a rear suspension member that includes left and right side sections disposed along the front-rear direction, both front-rear end portions thereof being attached to respective front portions of the rear side members; and left and right reinforcement members extending along the front-rear direction, and being disposed at a width direction inner side of rear portions of the side members and at a rear side of the rear suspension member, each including a straight ridgeline section extending along the front-rear direction from a front end portion across to a rear end portion of the reinforcement member, at least part of the respective front end portion of the reinforcement member overlapping the respective side section of the rear suspension member in a front-rear direction view.